CN114080357A

CN114080357A - Multiple composition product dispenser

Info

Publication number: CN114080357A
Application number: CN202080049793.XA
Authority: CN
Inventors: S·巴尔托鲁奇; T·M·戴; C·L·伦纳德; P·O·纳特利; M·V·施拉辛格
Original assignee: Procter and Gamble Co
Current assignee: Procter and Gamble Co
Priority date: 2019-07-09
Filing date: 2020-07-08
Publication date: 2022-02-22
Anticipated expiration: 2040-07-08
Also published as: EP3996851B1; US20210008578A1; JP7315727B2; EP3996851A1; JP2022537216A; WO2021007591A1; CN114080357B; KR20220007739A; US11161130B2

Abstract

The present invention provides a multi-component product dispenser capable of dispensing at least a first and a second composition simultaneously.

Description

Multiple composition product dispenser

Technical Field

The present invention generally relates to product dispensers suitable for dispensing two or more compositions.

Background

Dual composition product dispensers are generally known, including those for personal care compositions. One advantage of such products is the separation of compositions that are otherwise incompatible or at least incompatible to be held together. One way to dispense these dual compositions is through a side-by-side dual outlet nozzle. Another way of dispensing the product is through a concentric or at least partially concentric dual outlet nozzle; however, mechanical complexity increases with such configurations. On the other hand, one advantage of having such concentric outlets is that aesthetics of the dispensed product can be achieved. This is particularly important for users with more acute eye-gaze, especially in view of the myriad options available on the market. However, many of these product dispensers are not optimized for relatively viscous compositions and/or compact designs. Furthermore, there is a continuing need for dispensers having relatively wide manufacturing tolerances and/or that are relatively economical to manufacture (on high line).

Disclosure of Invention

The present invention addresses one or more of these needs. One aspect of the present invention provides a product dispenser capable of dispensing at least a first composition and a second composition simultaneously. The dispenser includes: a first container (for holding a first composition) and a second container (for holding a second composition). The dispenser further comprises a multi-combination flow director, wherein the flow director comprises: a first flow director cavity in fluid communication with the first container, wherein the first flow director cavity comprises a first cavity inlet plane opening, wherein the first cavity inlet plane opening comprises a first cavity inlet plane opening centroid, wherein the first cavity inlet axis orthogonally intersects said first cavity inlet plane opening centroid. The flow director further includes a second flow director cavity in fluid communication with the second container, wherein the second flow director cavity includes a second cavity inlet plane opening, wherein the second cavity inlet plane opening includes a second cavity inlet plane opening centroid, wherein the second cavity inlet axis orthogonally intersects the second cavity inlet plane opening centroid. The dispenser further comprises a nozzle, wherein the nozzle comprises: an inner nozzle conduit in fluid communication with the second flow director cavity; an outer nozzle conduit extending at least partially around the inner conduit in fluid communication with the first flow director cavity; and a nozzle longitudinal axis. Finally, the distributor includes an inlet intersection plane intersecting the first chamber inlet axis and the second chamber inlet axis, and the nozzle longitudinal axis intersects the plane to form an angle of 60 degrees to 90 degrees.

Another aspect of the present invention provides a product dispenser capable of dispensing at least a first composition and a second composition simultaneously. The product dispenser also includes a first container for containing the first composition and a second container for containing the second composition. The product dispenser also includes a multi-composition flow director, the multi-composition flow director comprising: a first flow director cavity in fluid communication with the first container; a second flow director cavity in fluid communication with the second container; an inner flow director seal ring positioned between the first flow director cavity and the second flow director cavity; and an outer flow director seal ring opposing the inner flow director seal ring along an inner/outer flow director seal ring longitudinal axis. The product dispenser further includes a nozzle comprising: an inner nozzle conduit in fluid communication with the second flow director cavity and fluidly sealed against the inner flow director seal ring; an outer nozzle conduit extending at least partially around the inner conduit, in fluid communication with the first flow director cavity and fluidly sealed against the outer flow director seal ring; and wherein the length of the inner conduit is longer than the length of the outer conduit.

One or more advantages are described. An advantage of the product dispenser described herein is consistent and/or complete dispensing of product, especially over time, and preferably no backflow at least minimizes backflow, especially with respect to the outer nozzle outlet (in a partially or fully concentric dual nozzle outlet configuration). Without wishing to be bound by theory, minimizing nozzle length helps facilitate a compact product dispenser design that is particularly useful for personal care compositions (e.g., skin care). This advantage is also applicable to dispensing relatively viscous compositions, especially for lower dosage volume applications.

An advantage of the product dispenser described herein is a dispenser that minimizes the amount of force a user needs to apply to simultaneously dispense compositions, especially compositions that may be relatively viscous. This is particularly helpful for an aging user population and/or to prevent or at least mitigate incomplete product dispensing.

An advantage of the product dispenser described herein is a dispenser that allows a product designer to vary the viscosity and/or nozzle outlet and/or flow channel configuration to provide a product dispenser capable of dispensing discrete products of a substantially infinite design.

An advantage of the product dispenser described herein is a dispenser that minimizes the number of parts and/or relatively high tolerances required for manufacturing.

An advantage of the product dispenser described herein is a dispenser that avoids or at least minimizes nozzle clogging, especially towards the end of product life.

An advantage of the product dispenser described herein is a dispenser that provides a relatively consistent user experience throughout the life of the product, particularly towards the end of the product life.

An advantage of the product dispenser described herein is a dispenser that dispenses multiple compositions in a desired ratio, thereby avoiding emptying one composition before the second composition, to avoid frustrating the user or causing the user to feel that the full value of the product is not realized.

An advantage of the product dispenser described herein is a dispenser for multiple compositions wherein the footprint of the flow director for each composition may be substantially the same. For example, this ensures a consistent ratio of the first and second compositions immediately after the two pumps are primed.

An advantage of the product dispenser described herein is a dispenser that facilitates mixing of the dispensed composition outside of the nozzle. This not only helps to promote aesthetic freedom (to the product designer), but also helps to mitigate contamination of otherwise incompatible compositions.

An advantage of the product dispenser described herein is a dispenser that generally avoids the thin steel condition, and in particular avoids the use of long, thin, cantilevered (i.e., supported on only one side) mold inserts typically used during the manufacture of nozzle conduits, wherein these inserts are housed within each other. This helps to improve the manufacturing tolerances of the nozzle duct and ultimately enables a reliable and robust manufacture of smaller nozzle duct wall segments and flow paths than other competing methods. This is desirable to minimize contamination in the nozzle area and achieve the desired dispensing aesthetics.

An advantage of the product dispenser described herein is a dispenser that encourages the user to provide uniform actuation, especially in those instances of product dispensers having more than one pump. In this way, these multiple pumps are actuated simultaneously to pump the desired volume and timing of the contained composition with which the respective pump is in fluid communication.

These and other features of the present invention will become apparent to those skilled in the art upon a reading of the following detailed description when taken in conjunction with the appended claims.

Drawings

While the specification concludes with claims particularly defining and distinctly claiming the invention, it is believed that the present invention will be better understood from the following description of the drawings. In the drawings:

FIG. 1 is a perspective view of a product dispenser;

FIG. 2 is an exploded perspective view of the product dispenser of FIG. 1;

FIG. 3A is a top view of the multiple-component flow director shown in FIG. 2;

FIG. 3B is a front view of the multi-component flow guide of FIG. 3A;

FIG. 4A is a left perspective view of the nozzle shown in FIG. 2;

FIG. 4B is a right perspective view of the nozzle of FIG. 4A;

FIG. 4C is a front view of the nozzle of FIG. 4A;

FIG. 4D is a rear view of the nozzle of FIG. 4A;

FIG. 5A is a top view of a nozzle functionally attached to the multi-component flow director of FIGS. 4A and 3A, respectively;

fig. 5B is a perspective view of a nozzle functionally attached to the multi-component flow guide of fig. 5A.

FIG. 6A is a perspective view of the interior of the actuator of FIG. 2;

FIG. 6B is a top view of the actuator of FIG. 6A;

fig. 7A is a perspective view of the exterior of the actuator of fig. 6A with the nozzle and multi-component flow director of fig. 5A attached.

Fig. 7B is a bottom view (inside) of any of the actuator/nozzle/multi-component flow guides of fig. 7A.

FIG. 8A is a cross-sectional view of the product dispenser of FIG. 2, wherein the cross-section is taken along a nozzle longitudinal axis, the cross-section including a nozzle functionally attached to a multi-component flow guide;

fig. 8B is an enlarged view of a portion of fig. 8A.

Detailed Description

Definition of

All percentages, parts and ratios are based on the total weight of the composition of the present invention, unless otherwise specified. All such references to the weight of listed ingredients are based on the active level and, therefore, do not include solvents or by-products that may be included in commercially available materials, unless otherwise specified. Herein, the term "weight percent" may be expressed as "% by weight". As used herein, all molecular weights are weight average molecular weights, expressed in grams/mole, unless otherwise specified.

As used herein, articles including "a" and "an" when used in a claim should be understood to mean one or more of what is claimed or described.

As used herein, the terms "comprising," "including," "containing," and "containing" are intended to be non-limiting, i.e., that other steps and other moieties may be added which do not affect the end result. The above terms encompass the terms "consisting of … …" and "consisting essentially of … …".

As used herein, the words "preferred," "prefer," and variations thereof refer to embodiments of the invention that are capable of providing specific benefits under specific circumstances. However, other embodiments may also be preferred under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, and is not intended to exclude other embodiments from the scope of the invention.

Fig. 1 is a perspective view of a product dispenser (1). The product longitudinal axis (22) extends along the length of the product dispenser (1) and orthogonally intersects the center of mass (not shown) at a plane (not shown) along the bottom of the subject product dispenser (1) (e.g., a flat surface on which the product stands when in an intended upright position). Preferably, at least a portion of the product dispenser (1) has rotational symmetry about a longitudinal product axis (22). For example, the product dispenser (1) may generally have a generally cylindrical shape. The product dispenser (1) preferably comprises an optional removable cap (23) (preferably at the top), which is preferably releasably attached to the pump collar (9). The removable cap (23) may be transparent, opaque, partially transparent, partially opaque, or a combination thereof. Preferably, the top cover (23) is opaque. Below the pump collar (9) and opposite the removable top cover (23) is the outer casing (15). The removable cap may be attached by snap fit or threaded fit or other means. In turn, the housing (15) may be transparent, opaque, partially transparent, partially opaque, or a combination thereof. Preferably, the housing (15) is transparent or partially transparent to show the user the amount of dispensable composition remaining and the contrasting colour between the plurality of dispensable compositions (not shown) contained within the product dispenser (1).

Still referring to fig. 1, in one example, the pump collar (9) is positioned at 60% to 90% (alternatively 65% to 85%, or 70% to 80%, or a combination thereof) of the overall height of the product dispenser, as measured along the product longitudinal axis (22). In one example, the overall height of the product dispenser (including the optional removable cap (23)) is preferably 125mm to 180mm, alternatively 135mm to 160mm, or about 145mm, or a combination thereof. The maximum width of the product dispenser, measured in a plane orthogonal to the product longitudinal axis (22), is preferably 30cm to 60cm, alternatively 35cm to 50cm, or 39mm to 43mm, or a combination thereof. The size will depend on the intended use of the product dispenser (1), the ergonomics of the intended use, and/or the size of the container volume (discussed in more detail below). One example is a personal care product dispenser, preferably a skin care product dispenser.

Fig. 2 is an exploded perspective view of the product dispenser (1) of fig. 1 as previously described. Also, the product longitudinal axis (22) is transverse to the length of the product dispenser (1). An optional removable cap (23) is located at the uppermost portion of the product dispenser (1) opposite the housing (15) located at the lowermost portion of the product dispenser (1). A removable cap (23) covers (within) the actuator (90). In turn, an actuator (90) covers and is functionally attached to and/or integral with the multi-component flow guide (31). The actuator (90) has an actuator top wall (92), and an actuator outer side wall (93) circumferentially surrounds the actuator top wall (92). The actuator outer side wall (93) has a hole, in particular an actuator nozzle hole (93). The nozzle (70) protrudes at least partially through the actuator nozzle aperture (93) when the nozzle (70) is functionally attached to the multi-composition flow guide (31). The nozzle is positioned along a nozzle longitudinal axis (80) that is preferably in a plane orthogonal to the longitudinal product axis (22), more preferably the nozzle longitudinal axis (80) intersects the longitudinal product axis (22). When the product dispenser (1) is actuated, the contained composition (not shown) is dispensed through the nozzle (70).

Still referring to fig. 2, the product dispenser (1) includes at least one pump, preferably a first pump (103) and a second pump (105). In an alternative example, the product dispenser may include a single pump in fluid communication with a plurality of contained compositions/containers. Or the product dispenser may include multiple pumps for each respective contained composition/container. Turning to fig. 2, the first pump (103) comprises a first pump cylinder (11) and a first pump rod (5) which is functionally received. Similarly, the second pump (105) comprises a second pump cylinder (13) and a second pump rod (7) which is functionally received. The cylinders (11, 13) may each house a spring that exerts an upward force on the respective pump rod (5, 7). The first pump rod (5) and the second pump rod (7) each have a respective first pump outlet (4) and second pump outlet (6). These outlets (4, 6) are each in fluid communication with a multi-component flow director (31). The pump collar (9) previously identified in fig. 1 can functionally hold the first and second pump cylinders (11, 13) and in such a way that when the product dispenser (1) is actuated, these cylinders (11, 13) move relative to the pump collar (9). Conversely, when the product dispenser (1) is actuated, the first pump rod (5) and the second pump rod (5) will move along an axis (not shown) that is parallel to the longitudinal product axis (22).

Still referring to fig. 2 and longitudinally below the first and second cylinders (11, 13) (along the longitudinal product axis (22)) is an adapter (17) that fits the container (21, 19) into the aforementioned housing (15). That is, the containers (21, 16) are accommodated in the housing (15). A first pump (103) is in fluid communication with the interior contents of the first container (21), and a second pump (105) is in fluid communication with the interior contents of the second container. The pump collar (9), the first and second pump cylinders (11, 13), the adapter (17), the first and second reservoirs (21, 19) and the housing together form a stationary subassembly (101). The stationary subassembly (101) forms a bottom portion of the product dispenser (1) and remains stationary relative to the opposing (and upper portion) movable subassembly (100) when the product dispenser (1) is actuated. The actuator (90), the nozzle (70), the multi-component flow guide (31), and the first pump rod (5) and the second pump rod (7) collectively form a movable subassembly (100). The movable subassembly (100) is mechanically coupled to the stationary subassembly such that the movable subassembly moves to dispense the composition contained within the product dispenser (1) upon actuation of the product dispenser (1) by a user. The first composition (18) is contained in a first container (21) and the second composition (20) is contained in a second container (19). It is these compositions (18,20) that are dispensed by the product dispenser (1). The first and second compositions can have various weight ratios relative to each other, for example, 4:1 to 1:4, or 3:1 to 1:1, or 2:1 to 1: 2. The preferred weight ratio of the first composition to the second composition is about 1: 1. The product dispenser is designed such that it is desirable that all of the contained compositions have the same product life, i.e., the end of the product life will avoid the situation where one container is empty of composition and another container contains some remaining amount of composition.

Fig. 3A is a top view of the multiple-component flow director (31) of fig. 2. The multi-composition flow director (31) has a flow director top planar surface (39). Preferably, the flow top planar surface (39) is in a plane orthogonal to the product longitudinal axis (22). The first flow director cavity (38) and the second flow director cavity (48) are substantially centrally located in the multi-composition flow director (31). The chambers (38, 48) are adjacent to each other. These chambers (38, 48) are defined in part by a common first/second common flow director chamber peripheral wall (54) projecting orthogonally from the flow director top planar surface (39). With reference to the first flow director cavity (38), a first flow director cavity circumferential wall (53) also projects orthogonally from the flow director top planar surface (39) and circumferentially defines the first flow director cavity (38) by joining on either end of a first/second common flow director cavity circumferential wall (54). Similarly, with reference to the second flow director cavity (48), a second flow director cavity circumferential wall (63) also projects orthogonally from the flow director top planar surface (39) and circumferentially defines the second flow director cavity (48) by joining on either end of the first/second common flow director cavity circumferential wall (54).

Still referring to fig. 3A, the multi-component flow director (31) includes an outer flow director seal ring (65) and an inner flow director seal ring (52). The inner flow director seal ring (52) is centrally located within the multi-composition flow director (31) and the outer flow director seal ring (65) is located on the outside of the multi-composition flow director (31), particularly along the long sides of the flow director (31). The flow guide sidewall (69) generally outlines the periphery of the multi-component flow guide (31) forming a pill-like profile, except for the outer flow guide seal ring (65) which slightly protrudes (in a plane along the flow guide planar surface (39)) from the otherwise generally symmetrical pill-like profile. The outer flow director seal ring (65) is larger than the inner flow director seal ring (52). The rings (65, 52) are aligned along the inner/outer flow guide seal ring longitudinal axis (60). An inner flow director seal ring (52) traverses the first/second common flow director chamber circumferential wall. Without the nozzle (70) being functionally attached (which is not shown in fig. 3A), the first and second flow director chambers (53, 48) are additionally in fluid communication with each other via the inner flow director sealing ring (52). There is a segmental circular channel (68) between the inner and outer flow guide seal rings (52, 65) and along the inner/outer flow guide seal ring longitudinal axis (60). The center point of the radius of the circular segmental channel (68) is along the inner/outer flow guide seal ring longitudinal axis (60). The channel (68) is recessed relative to the flow director top planar surface (39). The first flow directing cavity includes a circular segmental channel (68) along the inner/outer flow guide seal ring longitudinal axis (60). Preferably, the cross-section of the circular segmental channel (68) (nozzle (70) not functionally attached to the multi-composition flow guide (31)) in a plane normal to and relative to the inner/outer flow guide sealing ring longitudinal axis (6) is at least 1 radian, preferably 1 to 4 radians, more preferably 2 to 4 radians, alternatively about 3.14 radians.

Still referring to fig. 3A, the first flow director cavity (34) has a first cavity entrance plane opening (34). Similarly, the second flow director cavity (48) has a second cavity entrance plane opening (44). These openings (34, 33) are the ends of the respective cavities (34, 48) that are furthest from the inner/outer flow guide seal ring longitudinal axis (60) (in a plane along the flow guide planar surface (39)). The first chamber inlet plane opening (34) has a first chamber inlet plane opening centroid (35). Through the centroid (35) to intersect the first inlet axis (shown in fig. 3B below). The first inlet axis is orthogonal to the first chamber inlet plane opening (34). Similarly, the second chamber inlet plane opening (44) has a second chamber inlet plane opening centroid (45). Through the centroid (45) to intersect the second inlet axis (shown in fig. 3B below). The second inlet axis is orthogonal to the second chamber inlet plane opening (44).

Fig. 3B is a front view of the multi-combination flow guide of fig. 3A. The first inlet axis (36) intersects a first chamber inlet plane opening centroid (not shown, but previously described in fig. 3A), and similarly, the second inlet axis (46) intersects a second chamber inlet plane opening centroid (not shown, but previously described in fig. 3A). The first flow director receiver (32) projects along a first inlet axis (36) opposite the flow director top planar surface (39). Similarly, a second flow director receiver (42) projects along a second inlet axis (46) opposite the flow director top planar surface (39). Although not shown in fig. 3B, previously discussed in fig. 2, the first pump outlet (4) and the first flow director receiver (32) are fluidly sealed (and aligned along the first inlet axis (36)). Similarly, the second pump outlet (6) and the second flow director receiver (42) are fluidly sealed (and aligned along a second inlet axis (46)). The first inlet axis (36) and the second inlet axis (46) are parallel to each other. In turn, preferably the first and second inlet axes (36, 46) are parallel to the product longitudinal axis (22).

Still referring to fig. 3B, the flow director side wall (69) substantially wraps around the outer perimeter of the multi-component flow director (31). Closest to the first inlet axis (36) and opposite the first flow director receiver (32) is a front view of a portion of the first flow director cavity circumferential wall (53). A flow director side wall (69) is located between the first flow director cavity circumferential wall (53) and the first flow director receiver (32). Similarly, but closest to the second inlet axis (46) and opposite the second flow director receiver (42) is a front view of a portion of the second flow director cavity circumferential wall (63). A flow director side wall (69) is located between the second flow director cavity circumferential wall (63) and the second flow director receiver (42).

Still referring to fig. 3B, both the outer and inner flow director seal rings (65, 52) are shown. At the very center of the two rings (65, 52) is the inner/outer flow guide seal ring longitudinal axis (60). The first concentric ring closest to the inner/outer flow guide seal ring longitudinal axis (60) is the inner flow guide seal ring (52). The inside surface that always surrounds the inner flow guide seal ring (52) is an inner flow guide seal ring circumferential surface (55). The minimum inner diameter of the inner flow guide seal ring (52) is 3mm to 5.5mm, preferably 3.25mm to 5mm, more preferably 3.5mm to 4.5mm, alternatively about 4mm, measured in a plane orthogonal to the inner/outer flow guide seal ring longitudinal axis (60). Due to the circular segmental channel (68) (of the first flow director cavity (38)), a lower portion of the inner flow director seal ring (52) is visible in fig. 3B.

Still referring to fig. 3B, the next concentric ring further from the inner flow director seal ring (52) is the adjoining ring portion (57) of the outer flow director seal ring (65). The minimum inner diameter of the abutment ring portion (57) is 4.25mm to 7mm, preferably 4.5 to 6mm, more preferably 4.75 to 5.5mm, alternatively about 5mm, measured in a plane orthogonal to the inner/outer flow guide seal ring longitudinal axis (60).

Finally, the last concentric ring is a non-contiguous ring portion of the outer flow director seal ring (65). An inside surface of a non-adjacent ring portion that always surrounds the outer flow guide seal ring (65) is an outer flow guide seal ring inner circumferential surface (56). The minimum inner diameter of the non-adjacent ring portion of the outer flow director seal ring (65) is 5.5mm to 8mm, preferably 5.75mm to 7.5mm, more preferably 6mm to 7mm, alternatively about 6.5mm, measured in a plane orthogonal to the inner/outer flow director seal ring longitudinal axis (60).

The overall maximum outer diameter of the outer ring is 6.75mm to 9.5mm, preferably 7mm to 9mm, more preferably 7.5mm to 8.5mm, alternatively about 8mm, measured in a plane intersecting the inner/outer flow guide seal ring longitudinal axis (60). In one example, as shown in fig. 3B, the maximum outer diameter of the outer flow guide seal ring (65) is made substantially the same as the flow guide sidewall (69) and the first and second flow guide cavity circumferential walls (53, 63). The ratio of the smallest inner diameter of the non-adjacent ring portion of the outer flow guide seal ring (65) to the smallest diameter of the inner flow guide seal ring (52) is 5:4 to 5:2, preferably 11:4 to 2:1, more preferably 3:2 to 7:4, alternatively about 13: 8. Preferably, the cross-sectional shapes (in a plane orthogonal to the inner/outer flow guide seal ring longitudinal axis (60)) of the abutting ring portion (57) of the outer flow guide seal ring (65), the non-abutting ring portion of the outer flow guide seal ring (65) and the inner flow guide seal ring (52) are each independently selected from elliptical or circular (to achieve good sealing contact pressure with the nozzle duct, among others).

Still referring to fig. 3B, the inner/outer flow guide seal ring longitudinal axis (60) is substantially parallel to a plane along the flow guide planar surface (39), and wherein the plane is orthogonal to the first and second inlet axes (36, 46). In one example, an inlet intersection plane intersects the first cavity inlet axis (36) and the second cavity inlet axis (46), and the inner/outer flow guide seal ring longitudinal axis (60) intersects the plane to form an angle of 60 degrees to 90 degrees, preferably 70 degrees to 90 degrees, more preferably 80 degrees to 90 degrees, still more preferably 90 degrees (i.e., the inner/outer flow guide seal ring longitudinal axis (60) is orthogonal to the inlet intersection plane). Although not shown in fig. 3A and 3B, when the nozzle (7) is functionally attached to the multi-composition flow director (31) (by the outer and inner flow director seal rings (65, 52)), the nozzle longitudinal axis (80) and the inner/outer flow director seal ring longitudinal axis (60) are aligned (i.e., these axes (80, 60) are the same axis).

Referring to fig. 4A, a left perspective view of the nozzle (70) of fig. 2 is shown with the front of the nozzle (70) visible. The nozzle longitudinal axis (80) passes through the inner nozzle conduit outlet opening (75) along the center and length of the nozzle (7). The nozzle longitudinal axis (80) intersects the centroid (not shown) in orthogonal cross-sections on opposite ends of the inner nozzle conduit (71). The outer nozzle conduit outlet opening (75) is concentrically outward (relative to the nozzle longitudinal axis (80)) from the inner nozzle conduit (71). The inner nozzle conduit (71) is in fluid communication with a second flow director cavity (not shown). The outer nozzle conduit (81) is in fluid communication with a first flow director cavity (not shown). The outer nozzle conduit (81) extends circumferentially at least partially, preferably completely, around the inner nozzle conduit (71). There may be one, two or more inter-conduit support ribs (87) providing support between the outer and inner nozzle conduits (81, 71).

The length of the inner nozzle conduit (81) is longer than the length of the outer nozzle conduit (81) (measured along the nozzle longitudinal axis (80)). Thus, the inner nozzle conduit outer circumferential surface (82) of the inner nozzle conduit (71) extending beyond the outer nozzle conduit (81) is exposed (when the nozzle (70) is not functionally attached). An outer nozzle conduit outer circumferential surface (86) of the outer nozzle conduit (81) is exposed (when the nozzle (70) is not functionally attached). When the nozzle (70) is functionally attached to the multi-component flow guide (not shown in fig. 4A), the inner nozzle conduit outlet opening (73) and the outer nozzle conduit outlet opening (75) are exposed to the outside.

Fig. 4B is a right perspective view of the nozzle (70) of fig. 4A, with the back of the nozzle (70) visible. The nozzle longitudinal axis (80) passes through the center and length of the nozzle (70) and through the inner nozzle conduit inlet (83). The inner nozzle conduit inlet opening (83) is opposite the inner nozzle conduit outlet opening (73). The outer nozzle conduit inlet openings (85A, 85B) are concentrically outward (relative to the nozzle longitudinal axis (80)) from the inner nozzle conduit (71). The outer nozzle conduit inlet openings (85A, 85B) are opposite the outer nozzle conduit outlet opening (75). Inter-conduit support ribs (87) provide support between the outer nozzle conduit (81) and the inner nozzle conduit (82). The second inter-conduit support rib (87B) is visible in fig. 4B. The inter-conduit support ribs (87) may be partially, intermittently, and/or along the entire length of the nozzle (70). An inner nozzle guide outer circumferential surface (82) of an inner nozzle guide (71) extending beyond the outer nozzle guide (81) is exposed. An outer nozzle guide outer circumferential surface (86) of the outer nozzle guide (81) is exposed. In one example, the length of the outer nozzle conduit (81) is 30% to 99%, preferably 40% to 90%, more preferably 50% to 80% of the length of the inner nozzle conduit (71) (measured in a plane along the nozzle longitudinal axis (80)).

Fig. 4C is a front view of the nozzle (70) of fig. 4A. The nozzle longitudinal axis (80) is located at the center of the nozzle (70) and the inner nozzle conduit (71). The outer nozzle conduit (81) is concentrically outward (relative to the nozzle longitudinal axis (80)) from the inner nozzle conduit (71). The first and second inter-conduit support ribs (87A and 87B, respectively) provide support between the outer and inner nozzle conduits (81, 82) and bifurcate the outer nozzle conduit outlet openings (75A, 75B). Fig. 4D is a rear view of the nozzle (70) of fig. 4A, and is an opposite view of fig. 4C. The nozzle longitudinal axis (80) is located at the center of the nozzle (70) and the inner nozzle conduit (71). The outer nozzle conduit (81) is concentrically outward (relative to the nozzle longitudinal axis (80)) from the inner nozzle conduit (71). The first and second inter-conduit support ribs (87A and 87B, respectively) provide support between the outer and inner nozzle conduits (81, 82) and bifurcate the outer nozzle conduit inlet openings (85A, 85B).

The nozzle (70) described herein can be manufactured using a simple straight pull mold. The two core inserts that build the outer and inner nozzle conduits (81, 82) are fully supported. This allows reducing the conduit wall thickness while minimizing the risk of core deflection.

Fig. 5A is a top view of a nozzle (70) functionally attached to the multi-component flow director (31) of fig. 4A and 3A, respectively. And fig. 5B is a perspective view of a nozzle functionally attached to the multi-component flow guide of fig. 5A. The flowing multi-component flow director (31) has a flow director top planar surface (39). The first flow director cavity (38) and the second flow director cavity (48) are substantially centrally located in the multi-composition flow director (31). The chambers (38, 48) are adjacent to each other. These chambers (38, 48) are defined in part by a common first/second common flow director chamber peripheral wall (54) projecting orthogonally from the flow director top planar surface (39). With reference to the first flow director cavity (38), a first flow director cavity circumferential wall (53) also projects orthogonally from the flow director top planar surface (39) and circumferentially defines the first flow director cavity (38) by joining on either end of a first/second common flow director cavity circumferential wall (54). Similarly, with reference to the second flow director cavity (48), a second flow director cavity circumferential wall (63) also projects orthogonally from the flow director top planar surface (39) and circumferentially defines the second flow director cavity (48) by joining on either end of the first/second common flow director cavity circumferential wall (54).

Still referring to fig. 5A and 5B, the multi-composite flow director (31) includes an outer flow director seal ring (65) and an inner flow director seal ring (52). The inner flow director seal ring (54) is centrally located within the multi-composition flow director (31) and the outer flow director seal ring (65) is located on the outside of the multi-composition flow director (31), particularly along the long sides of the flow director (31). The flow guide sidewall (69) generally outlines the periphery of the multi-component flow guide (31) forming a pill-like profile, except for the outer flow guide seal ring (65) which slightly protrudes (in a plane along the flow guide planar surface (39)) from the otherwise generally symmetrical pill-like profile. The outer flow guide seal ring (65) is generally larger (i.e., larger in diameter) than the outer nozzle conduit (81) of the inner flow guide seal ring (52) and nozzle (70). For clarity, the inner/outer flow guide seal ring longitudinal axis (6) and the nozzle longitudinal axis (80) are the same axis used for purposes of fig. 5A and 5B (and thus may be used interchangeably). Thus, the outer and inner flow guide seal rings (65 and 52, respectively) are aligned along the inner/outer flow guide seal ring longitudinal axis (6) and the nozzle longitudinal axis (80). The outer nozzle conduit (81) has a larger diameter than the inner flow guide sealing ring (52). An inner flow director seal ring (52) traverses the first/second common flow director chamber circumferential wall. With the nozzle (70) functionally attached, the first and second flow director chambers (53, 48) are not in fluid communication with each other (as previously described in fig. 3A and 3B without the nozzle (70)). There is a segmental circular channel (68) between the inner and outer flow guide seal rings (52, 65) and along the inner/outer flow guide seal ring longitudinal axis (60). When the nozzle (70) is functionally attached, the channel (68) is now partially occupied by the inner nozzle conduit (71).

Still referring to fig. 5A and 5B, the first flow director cavity (34) has a first cavity entrance plane opening (34). Similarly, the second flow director cavity (48) has a second cavity entrance plane opening (44). These openings (34, 33) are the ends of the respective cavities (34, 48) that are furthest from the inner/outer flow guide seal ring longitudinal axis (60)/nozzle longitudinal axis (80) (in a plane along the flow guide planar surface (39)). The first chamber inlet plane opening (34) has a first chamber inlet plane opening centroid (35). Through which the centre of mass (35) intersects the first inlet axis (36). The first inlet axis (36) is orthogonal to the first chamber inlet plane opening (34). Similarly, the second chamber inlet plane opening (44) has a second chamber inlet plane opening centroid (45). Through the centroid (45) to intersect the second inlet axis (46). The second inlet axis (46) is orthogonal to the second chamber inlet plane opening (44).

An inner nozzle conduit (71) of the functionally attached nozzle (70) is in fluid communication with the second flow director cavity (48) and is fluidly sealed against the inner flow director seal ring (52). An outer nozzle conduit (81) of the functionally attached nozzle (70) is in fluid communication with the first flow director cavity (38) and is fluidly sealed against the outer flow director seal ring (65). The inner nozzle conduit (71) is longer than the outer nozzle conduit (81). A fluid seal between the inner nozzle conduit (71) and the inner flow guide seal ring (52) is formed between an inner nozzle conduit outer circumferential surface (82) and an inner flow guide seal ring inner circumferential surface (55). For example, 3% to 30%, preferably 5% to 25%, more preferably 10% to 20% (e.g., about 16%) of the total length of the nozzle (70) as measured along the nozzle longitudinal axis (80) forms a fluid seal between the inner nozzle conduit (71) and the inner flow guide sealing ring (52). A fluid seal of the outer nozzle guide (81) and the outer flow guide seal ring (65) is formed between an outer nozzle guide outer circumferential surface (86) and an outer flow guide seal ring inner circumferential surface (56). For example, 10% to 50%, preferably 20% to 40%, more preferably 25% to 35% (e.g., about 28%) of the total length of the nozzle (70) measured along the nozzle longitudinal axis (80) forms a fluid seal between the outer nozzle conduit (81) and the outer flow guide sealing ring (65). In one particular example, the fluid seal of the outer nozzle conduit (81) and the outer flow guide seal ring (65) is formed to include at least a midpoint of an overall length of the nozzle (70) (the length being measured along the nozzle longitudinal axis (80)).

Fig. 6A is a perspective view of the interior of the actuator (24) of fig. 2. Fig. 6B is a top view of the actuator of fig. 6A. Referring collectively to fig. 6A and 6B, the outer perimeter of the actuator (24) is defined by an actuator outer sidewall (93) that projects orthogonally from an actuator top wall inner surface (98). The actuator nozzle hole (25) is located in the outer periphery of the actuator (24) from which the nozzle protrudes (not shown). The nozzle longitudinal axes (8) intersect through the middle of the actuator nozzle bore (25). Concentrically inward from the actuator outer sidewall (93) is an actuator flow director circumferential wall (24) that also projects orthogonally from the actuator top wall inner surface (98). Although not shown in fig. 6A and 6B, the multi-composition flow director (31) and the actuator (24) are functionally attached to each other within a concentrically defined interior space defined by the actuator flow director circumferential wall (24). The actuator flow director circumferential wall (24) is nearly continuous but closest to the actuator nozzle orifice (25). More detail on this aspect is provided below (when referring to fig. 7B), but basically the actuator flow director circumferential wall (24) is discontinuous to provide space for the outer flow director seal ring (not shown) and nozzle (not shown) when they are ultimately functionally attached to the actuator (24). Concentrically inward from the actuator flow director circumferential wall (24) are an actuator first cavity circumferential wall (91) and an actuator second cavity circumferential wall (58), both of which project orthogonally from the actuator top wall inner surface (98) and are each generally continuous in the form of an elongated pill (mirror the shape of the first and second flow director cavities (38, 48) of the multi-component flow director (31), the first and second flow director cavities not being shown in fig. 6A and 6B). Although not shown in fig. 6A and 6B, the actuator first chamber circumferential wall (91) and the actuator second chamber circumferential wall (58) are functionally attached within the first and second flow director chambers (38, 48) of the multi-composition flow director (31). The actuator first chamber circumferential wall (91) is closest to the actuator nozzle holder (25) relative to the actuator second chamber circumferential wall (58) along the nozzle longitudinal axis (80). The actuator first cavity circumferential wall (91) has a first recess of the actuator first cavity circumferential wall (95A) and a second recess of the actuator first cavity circumferential wall (95B), wherein the recesses (95A, 95B) have a circular segmental profile. The center point of the radius of the segmental profile is substantially along the nozzle longitudinal axis (80). Although not shown in fig. 6A and 6B, when the nozzle (70) and multi-component flow guide (31) are functionally attached to the actuator (90), the first recess of the actuator first chamber peripheral wall (95A) contacts the inner nozzle guide outer circumferential surface (82). Also not shown, when the nozzle (70) and multi-component flow director (31) are functionally attached to the actuator (90), the second recess of the actuator first chamber perimeter wall (95B) contacts the inner flow director seal ring (52) (which protrudes into the first flow director chamber (38)). The actuator first cavity peripheral wall longitudinal axis (111) is along the length (i.e., longest dimension) of the actuator first cavity peripheral wall (91). Similarly, the actuator second chamber circumferential wall longitudinal axis (112) is along the length (i.e., longest dimension) of the actuator second chamber circumferential wall (58). Referring to fig. 6B, a first angle θ (113) is formed between the nozzle longitudinal axis (80) and the actuator first chamber peripheral wall longitudinal axis (111). The first angle θ (113) is preferably less than 90 degrees, more preferably 60 to 86 degrees, even more preferably 70 to 82 degrees, alternatively about 78 degrees. Similarly, a second angle θ (112) is formed between the nozzle longitudinal axis (80) and the actuator second chamber circumferential wall longitudinal axis (112). The second angle θ (114) is preferably less than 90 degrees, more preferably 60 to 86 degrees, even more preferably 70 to 82 degrees, alternatively about 78 degrees. In a preferred example, the first angle θ (113) and the second angle θ (114) each have the same angle. The first and second flow director chambers (38, 48) (and the actuator first chamber circumferential wall (91) and the actuator second chamber circumferential wall (58) functionally attached thereto) have a straight flow path layout. This arrangement may be advantageous because it may help maintain a robust seal even in the presence of some degree of warping that may occur as part of the injection molding process. Furthermore, having first and second theta angles that are less than 90 degrees also helps to minimize turbulence/pressure buildup that might otherwise exist at angles of 90 degrees (or greater). The underside of the visual demarcation line (27) on the actuator top wall inner surface (98) is shown.

Fig. 7A is a perspective view of an outer surface of the actuator (90) of fig. 6A, with the nozzle (70) and multi-component flow guide (not shown) of fig. 5A functionally attached. An actuator (90) covers the multi-component flow director (3) and preferably at least partially covers the nozzle (70). An actuator top wall outer surface (97) is located on top of the actuator (90) and is laterally surrounded by an actuator outer side wall (93). A portion of the nozzle (70) protrudes through the actuator outer sidewall (93) (through the aforementioned actuator nozzle aperture (25)). Preferably, the nozzle (70) projects from the actuator outer side wall (93) by 1mm to 3mm, preferably 1.5mm to 2.5mm, measured along the nozzle longitudinal axis (80). Without wishing to be bound by theory, this protrusion length balances the need for the nozzle to protrude far enough to avoid contamination of the dispensing composition by the actuator outer sidewall (93), but not so far as to interfere with proper dispensing ergonomics and/or placement of the removable cap. Preferably, the length of the nozzle (70) is greater than 50%, preferably greater than 55%, more preferably between 55% and 80%, still more preferably 60% to 70% of the width of the actuator (90) measured along the nozzle longitudinal axis (80) and with the nozzle (70) functionally attached. With reference to the actuator top wall (92), the visual demarcation line (27) indicates to the user where to best press the depressible button (99). The user presses the depressible button (99) to actuate the product dispenser (1). The depressible button (99) is in mechanical communication with the pump (103, 105). The discrete products are dispensed from a product dispenser (where the discrete products comprise the composition dispensed from the dispenser).

Fig. 7B is a bottom view (i.e., internal view) of an actuator (90) with a functionally attached nozzle (70) and multi-component flow guide (31) (as previously described in fig. 7A). The outer periphery of the actuator (24) is defined by an actuator outer side wall (93) projecting orthogonally from the actuator top wall inner surface (98). The actuator nozzle hole (25) is located in an outer periphery from which a nozzle (70) of the actuator (24) protrudes. The nozzle longitudinal axis (8) intersects through the actuator nozzle bore (25) and the middle of the nozzle (70). Concentrically inward from the actuator outer sidewall (93) is an actuator flow director circumferential wall (24) that also projects orthogonally from the actuator top wall inner surface (98). The multi-composition flow director (31) and the actuator (24) are functionally attached to each other within a concentrically defined interior space defined by an actuator flow director circumferential wall (24). The outer surface of the flow director side wall (69) contacts a concentric inwardly facing surface of the actuator flow director circumferential wall (24). When functionally connected, the flow director top planar surface (39) (of the multi-component flow director (31)) and the actuator top wall inner surface (98) (of the actuator (90)) face each other, i.e., contact each other. A first flow director receiver (32) and a first chamber inlet axis (36) projecting orthogonally therefrom and a second flow director receiver (42) and a second chamber inlet axis (46) projecting orthogonally therefrom are located on either side of the multi-component flow director. The inlet intersection plane (26) intersects the first chamber inlet axis (36) and the second chamber inlet axis (46). The nozzle longitudinal axis (80) intersects the plane to form an angle of 60 to 90 degrees, preferably 80 to 90 degrees. In a preferred example, the angle is 90 degrees (i.e., the nozzle longitudinal axis (8) is orthogonal to the inlet intersection plane (26)).

Fig. 8A is a cross-sectional view of the product dispenser (1) of fig. 2, wherein the cross-section is taken along a nozzle longitudinal axis (80), the cross-section including a nozzle (70) functionally attached to a multi-composition flow director (31). In this example, the nozzle longitudinal axis (8) intersects the longitudinal product axis (22) orthogonally. The first inlet axis (36) (and the second inlet axis (not shown)) is parallel to the longitudinal product axis (22). Fig. 8B is an enlarged view of the portion of fig. 8A focused on the functionally attached nozzle (70) and the outer and inner flow guide seal rings (65, 52, respectively). The nozzle (70) comprises an inner nozzle conduit (71) and an outer nozzle conduit (81). The flow path through the outer nozzle conduit is not shown because the cross-section is taken through the opposing first and second inter-conduit support ribs (87); however, the cross section, which would otherwise be the flow path through the outer nozzle conduit (81), is indicated by the dashed line. The inner nozzle conduit (71) is fluidly sealed against the inner flow guide sealing ring (52). Preferably, a fluid seal between the inner nozzle conduit (71) and the inner flow guide seal ring (52) is formed between the inner nozzle conduit outer circumferential surface (82) and the inner flow guide seal ring inner circumferential surface (55). Preferably, a fluid seal is formed between 3% to 30%, preferably 5% to 25%, more preferably 10% to 20%, alternatively about 16% of the total length of the nozzle (70) measured along the nozzle longitudinal axis (80) between the inner nozzle conduit (71) and the inner flow guide sealing ring (52).

Still referring to fig. 8A and 8B, the outer nozzle conduit (81) extends at least partially around the inner conduit (71), and the outer nozzle conduit (81) is fluidly sealed against the outer flow guide sealing ring (65). Preferably, the fluid seal of the outer nozzle conduit (81) and the outer flow guide seal ring (65) is formed between an outer nozzle conduit outer circumferential surface (86) and an outer flow guide seal ring inner circumferential surface (56). Preferably, 10% to 50%, preferably 20% to 40%, more preferably 25% to 35%, alternatively about 28% of the total length of the nozzle (70) measured along the nozzle longitudinal axis (80) forms a fluid seal between the outer nozzle conduit (81) and the outer flow guide sealing ring (65). In one example, the fluid seal of the outer nozzle conduit (81) and the outer flow guide seal ring (65) is formed to include at least a midpoint of an overall length of the nozzle (70), the length being measured along the nozzle longitudinal axis (80).

Still referring to fig. 8A and 8B, preferably the outer flow director seal ring (65) further comprises an abutment ring portion (57) projecting circumferentially inwardly narrowing the cross-sectional area relative to a non-abutment ring portion (not shown) of the outer flow director seal ring (65). More preferably, the abutment ring portion (57) is adjacent to a first flow director cavity (not shown). When the nozzle (70), if functionally attached to the multi-component flow guide (31), preferably the thickness of the abutment ring portion (57) of the outer flow guide sealing ring (65) is equal to or less than the thickness of the outer wall of the outer nozzle conduit (81) that abuts the abutment ring portion (57). The thickness of the abutment ring portion (57) is measured in a plane orthogonally intersecting the nozzle longitudinal axis (80). The cross-sectional thickness of the outer wall of the outer nozzle conduit (81) is measured in a plane that orthogonally intersects the nozzle longitudinal axis (80). Preferably, the cross-sectional opening of the inner flow guide seal ring (52) is smaller than the cross-sectional opening of the adjoining ring portion (57) of the outer flow guide seal ring (65), preferably 70% to 99%, more preferably 75% to 98%, still more preferably 80% to 97%. The cross-sectional opening is measured in a plane orthogonal to the inner/outer flow guide seal ring longitudinal axis (60), and the nozzle (70) is not functionally attached to the multi-component flow guide (31). The cross-sectional opening of the abutment ring portion (57) is measured in a plane orthogonal to the inner/outer flow guide seal ring longitudinal axis (60), and the nozzle (70) is not functionally attached to the multi-composition flow guide (31). Preferably, the adjoining ring portion (57) of the outer flow guide sealing ring (65) is smaller than the cross-sectional opening of the non-adjoining ring portion (not shown) of the outer flow guide sealing ring (65), preferably 70% to 99%, more preferably 75% to 98%, still more preferably 80% to 97%. These cross-sectional areas are measured in a plane orthogonal to the inner/outer flow guide seal ring longitudinal axis (60), and the nozzle (70) is not functionally attached to the multi-component flow guide (31). Preferably, the non-adjacent ring portion is located distally (along the inner/outer flow guide seal ring longitudinal axis (60)) of the first flow guide cavity (38) relative to the adjacent ring portion (57).

The product dispenser contains at least two or more compositions. The contained composition can be a number of different types of compositions. Non-limiting examples of such compositions include fabric care compositions, home care compositions, dish care compositions, hard surface care compositions, hair care compositions, oral care compositions, beauty care compositions, baby care compositions, detergent compositions, cleaning compositions, and the like. In view of the relatively small volume of dispensing and the advantages of the present invention that will be provided in a compact implementation (and optionally also one or more of the additional advantages described herein), particularly preferred are personal care compositions, even more preferred are skin care compositions.

Preferably, the product dispenser is capable of dispensing a discrete dispensing of product (from the composition contained within the product dispenser) having a defined rheology. That is, the first and second compositions (18,20) each have certain defined rheological properties. For example, the contained compositions corresponding to discrete dispensed products each include a cross Stress (cross Stress) assessed by the partial Oscillatory rheological Test Method ("PORTM") as described below. Preferably, at least the first composition or the second composition, more preferably at least the second composition each independently comprises a cross stress equal to or greater than 10 pascals (Pa), preferably from 10Pa to 120Pa, more preferably from 10Pa to 80Pa, even more preferably from 15Pa to 50 Pa. Non-limiting examples of the cross-stress of the second composition are 15Pa, 25Pa or 40 Pa. Preferably, the first composition comprises a cross stress equal to or greater than 5Pa, preferably 5Pa to 120Pa, more preferably 5Pa to 80Pa, even more preferably 10Pa to 50Pa, assessed by PORTM. Non-limiting examples of the cross-stress of the first composition are 15Pa, 25Pa or 40 Pa. One advantage of a second composition having such cross-stress is that the second composition remains unique by maintaining its dispensed shape within the dispensed product. Preferably, in one example, the viscosities of the first and second compositions (21, 21) are within 25% of each other, preferably within 20% of each other, more preferably within 15% of each other, still more preferably within 10% of each other, still more preferably within 5% of each other.

As described herein, the "cross-stress" of a portion (e.g., a first portion or a second portion of a discrete dispensed product) is determined using a partial oscillatory rheology test method ("PORTM"), reported in Pa. A controlled strain rotational rheometer (such as Discovery HR-2, TA Instruments, New Castle, DE, USA, or equivalent) capable of partial sample temperature control (using a Peltier cooler and resistive heater combination) was used for this test. Prior to testing, each sample was stored in a separate container and placed in a temperature controlled laboratory (23. + -. 2 ℃ C.) overnight. During the test, the laboratory temperature was controlled at 23 ± 2 ℃. The rheometer operated with a parallel plate configuration and a 40mm cross-woven stainless steel parallel plate tool. The rheometer was set at 25 ℃. Approximately 2ml of sample portions were gently loaded from the sample container onto the peltier plate using a spatula to prevent the sample portion structure from changing and any excess protruding sample was trimmed off once the gap reached 1000 μm after sample loading. The sample portion was then equilibrated at 25 ℃ for at least 120 seconds before the measurement started. In the case of using a different rheometer, the equilibration time was extended appropriately to ensure that the temperature of the sample portion reached 25 ℃ prior to testing. At 25 ℃, with the oscillation frequency fixed at 1Hz (i.e., one cycle per second), the test started by increasing the rheometer from 0.1% to 1000% strain amplitude in logarithmic mode. For each strain amplitude sampled, the resulting time-dependent stress was analyzed according to a conventional log-oscillatory strain form known to those skilled in the art to obtain the storage modulus (G') and loss modulus (G ") at each step. Where G' and G "(both in pascals, the vertical axis) are plotted against the strain amplitude (percent strain, horizontal axis). The lowest strain amplitude was recorded for the trace where G 'and G "crossed (i.e., when tan (δ) ═ G"/G' ═ 1). This point is defined as the crossover point and the oscillating stress at this point is defined as the "crossover stress" and reported, to the nearest integer, in Pa. Rheological properties measured by the rheometer provided by the present disclosure include, but are not limited to, storage modulus G', loss modulus G ", loss factor tan (δ). The crossover points were extracted using the TRIOS software (provided by the TA instrument) and were adapted to other equivalent rheology software.

It should be understood that reference in the specification to "an embodiment" or a similar method means that a particular material, feature, structure, and/or characteristic described in connection with the embodiment is included in at least one embodiment, optionally multiple embodiments, but that this does not mean that all embodiments include the described material, feature, structure, and/or characteristic. Furthermore, the materials, features, structures, and/or characteristics may be combined in any suitable manner in different embodiments and may be omitted or substituted for those described. Thus, unless otherwise stated or an incompatibility is stated or stated, embodiments and aspects described herein may comprise or may be combined with elements or components of other embodiments and/or aspects, although not explicitly exemplified in the combination.

The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Rather, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm". All numerical ranges set forth herein include the narrower ranges; the upper and lower limits of the ranges described are interchangeable to further form ranges not explicitly described. Embodiments described herein may comprise, consist essentially of, or consist of the essential components and optional ingredients described herein. As used in the specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

Each document cited herein, including any cross referenced or related patent or patent application and any patent application or patent to which this application claims priority or its benefits, is hereby incorporated by reference in its entirety unless expressly excluded or otherwise limited. The citation of any document is not an admission that it is prior art with any disclosure of the invention or the claims herein or that it alone, or in combination with any one or more of the references, teaches, suggests or discloses any such invention. Further, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall govern.

While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.

Claims

1. A product dispenser (1) capable of dispensing at least a first composition (18) and a second composition (20) simultaneously, the product dispenser comprising:

(a) a first container (21) for containing the first composition (18) and a second container (19) for containing the second composition (20);

(b) a multi-composition flow director (31), the multi-composition flow director comprising:

(i) a first flow director cavity (38) in fluid communication with the first container (21);

(ii) a second flow director cavity (48) in fluid communication with the second container (19);

(iii) an inner flow director seal ring (52) positioned between the first flow director cavity (38) and the second flow director cavity (48);

(iv) an outer flow director seal ring (65) opposite the inner flow director seal ring (52) along an inner/outer flow director seal ring longitudinal axis (60);

(c) a nozzle (70) comprising:

(i) an inner nozzle conduit (71) in fluid communication with the second flow director cavity (48) and fluidly sealed against the inner flow director seal ring (52);

(ii) an outer nozzle conduit (81) extending at least partially around the inner conduit (71), in fluid communication with the first flow director cavity (38) and fluidly sealed against the outer flow director seal ring (65);

(iii) wherein the length of the inner conduit (71) is longer than the length of the outer conduit (81).

2. The product dispenser (1) of claim 1 wherein said fluid seal between said inner nozzle conduit (71) and said inner flow director seal ring (52) is formed between an inner nozzle conduit outer circumferential surface (82) and an inner flow director seal ring inner circumferential surface (55).

3. The product dispenser (1) according to any one of the preceding claims, wherein 3% to 30%, preferably 5% to 25%, more preferably 10% to 20% of the total length of the nozzle (70) measured along a nozzle longitudinal axis (80) forms the fluid seal between the inner nozzle conduit (71) and the inner flow director seal ring (52).

4. The product dispenser (1) according to any one of the preceding claims, wherein the fluid seal between the outer nozzle conduit (81) and the outer flow guide sealing ring (65) is formed between an outer nozzle conduit outer circumferential surface (86) and an outer flow guide sealing ring inner circumferential surface (56).

5. The product dispenser (1) according to any one of the preceding claims, wherein 10% to 50%, preferably 20% to 40%, more preferably 25% to 35% of the total length of the nozzle (70) measured along a nozzle longitudinal axis (80) forms the fluid seal between the outer nozzle conduit (81) and the outer flow director seal ring (65);

optionally, the fluid seal of the outer nozzle conduit (81) and the outer flow guide sealing ring (65) is formed to include at least a midpoint of an overall length of the nozzle (70), the length being measured along a nozzle longitudinal axis (80).

6. The product dispenser (1) according to any one of the preceding claims, wherein the length of the outer nozzle conduit (81) is 30% to 99%, preferably 40% to 90%, more preferably 50% to 80% of the length of the inner nozzle conduit (71).

7. The product dispenser (1) according to any one of the preceding claims wherein the outer flow guide sealing ring (65) further comprises an abutment ring portion (57) projecting circumferentially inwardly narrowing the cross-sectional area relative to a non-abutment ring portion (not shown) of the outer flow guide sealing ring (65);

preferably, the abutment ring portion (57) is adjacent the first flow director cavity (38).

8. The product dispenser (1) of claim 7 wherein the thickness of the abutment ring portion (57) is equal to or less than the thickness of the outer wall of the outer nozzle conduit (81) that abuts the abutment ring portion (57).

9. The product dispenser (1) according to claim 7 or 8, wherein the cross-sectional opening of the inner flow guide seal ring (52) is smaller than the cross-sectional opening of the adjoining ring portion (57) of the outer flow guide seal ring (65), preferably 70% to 99%, more preferably 75% to 98%, still more preferably 80% to 97%.

10. The product dispenser (1) according to claim 7, 8 or 9, wherein the abutting ring portion (57) of the outer flow director seal ring (65) is smaller than a cross-sectional opening of a non-abutting ring portion (not shown) of the outer flow director seal ring (65), preferably 70% to 99%, more preferably 75% to 98%, still more preferably 80% to 97%.

11. The product dispenser (1) of claim 10 wherein said non-adjacent ring portion is located distally of said first flow director cavity (38) relative to said adjacent ring portion (57).

12. The product dispenser (1) of any of claims 7 to 11 wherein the cross-sectional shapes of the abutment ring portion (57) of the outer flow director seal ring (65), the non-abutment ring portion of the outer flow director seal ring (65), and the inner flow director seal ring (52) are each independently selected from circular or elliptical.

13. The product dispenser (1) according to any one of the preceding claims, wherein the outer nozzle conduit (81) extends at least partially, preferably completely, circumferentially around the inner nozzle conduit (71).

14. The product dispenser (1) according to any one of the preceding claims wherein said first flow chamber director cavity further comprises a circular segmental channel (68) along said inner/outer flow director seal ring longitudinal axis (60);

preferably wherein the cross-section of the segmental circular channel in a plane normal to and relative to the inner/outer flow guide seal ring longitudinal axis (60) is at least 1 radian, preferably 1 radian to 4 radians, more preferably 2 radians to 4 radians.

15. The product dispenser (1) according to any one of the preceding claims, wherein:

(a) the first flow director cavity (38) further comprising a first cavity inlet plane opening (34), wherein the first cavity inlet plane opening (34) comprises a first cavity inlet plane opening centroid (35), wherein a first cavity inlet axis (36) orthogonally intersects the first cavity inlet plane opening centroid (35);

(b) the second flow director cavity (48) comprising a second cavity inlet plane opening (44), wherein the second cavity inlet plane opening (44) comprises a second cavity inlet plane opening centroid (45), wherein a second cavity inlet axis (46) orthogonally intersects the second cavity inlet plane opening centroid (45);

(c) a nozzle longitudinal axis (80) along the nozzle (70); and is

(d) Wherein an inlet intersection plane (26) intersects the first chamber inlet axis (36) and the second chamber inlet axis (46), and the nozzle longitudinal axis (80) intersects the plane to form an angle of 60 degrees to 90 degrees, preferably 90 degrees;

(e) optionally:

wherein the first composition (18) is contained in the first container (21) and the second composition (20) is contained in the second container (19), wherein the viscosity of at least the first composition (18) or the second composition (20), preferably at least the second composition (20), more preferably the first and second compositions (18,20), each independently has a cross-stress as assessed by the partial oscillatory rheology test method ("PORTM") as described herein, wherein the cross-stress of the first and second compositions (18,20) each independently is equal to or greater than 10 pascals (Pa), preferably from 10Pa to 120Pa, more preferably from 10Pa to 80Pa, even more preferably from 15Pa to 50 Pa;

preferably, the viscosities of the first and second compositions (18,20) are within 25% of each other, preferably within 20% of each other, more preferably within 15% of each other, still more preferably within 10% of each other, still more preferably within 5% of each other;

more preferably, the first composition (18) and the second composition (20) are each skin care compositions.